Approved Vendor LWLIS0750USA 025BX Split Lock Washer, Steel, 3 4 in Screw Sz, 3 4 in Max. Inside Dia, 5 32 in Max Thick, 25 PK 77038 Schedule 80 Material Grade A105 Schedule 80 Material Grade A105 Maximum Operating Temperature 550 Degrees F Minimum Operating Temperature 20 Degrees F Manufacture Location Globally Sourced Country of Origin USA (subject to change) 319 gph @ 70 Degrees F Operating Voltage 208V AC Tank Insulation Material Polyurethane Included Valves Temperature and Pressure Relief Thermal Efficiency 98 % Tank Outer Shell Finish Porcelain Enamel Tank Outer Shell Material Steel Color Silver 153 in Inside Diameter 0